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Finding the Fourth Proportional to 107,819.60, 161,729.40 and 98,488.40

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Solution

The fourth proportional to 107,819.60, 161,729.40 and 98,488.40 is: 147,732.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,819.60 : 161,729.40 = 98,488.40 : x
  2. Step 2: Convert to fraction form
    107,819.60/161,729.40 = 98,488.40/x
  3. Step 3: Cross multiply
    107,819.60x = 161,729.40 × 98,488.40
  4. Step 4: Simplify right side
    107,819.60x = 15,928,469,838.96
  5. Step 5: Solve for x
    x = 15,928,469,838.96/107,819.60
  6. Step 6: Final answer
    x = 147,732.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.